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/*#######################################################################################*/
1
/*#######################################################################################*/
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/* !!! THIS IS NOT FREE SOFTWARE !!!                                                     */
2
/* !!! THIS IS NOT FREE SOFTWARE !!!                                                     */
3
/*#######################################################################################*/
3
/*#######################################################################################*/
4
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
4
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
5
// + Copyright (c) 2008 Ingo Busker, Holger Buss
5
// + Copyright (c) 2008 Ingo Busker, Holger Buss
6
// + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY
6
// + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY
7
// + FOR NON COMMERCIAL USE ONLY
7
// + FOR NON COMMERCIAL USE ONLY
8
// + www.MikroKopter.com
8
// + www.MikroKopter.com
9
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
9
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10
// + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation),
10
// + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation),
11
// + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist.
11
// + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist.
12
// + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt
12
// + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt
13
// + bzgl. der Nutzungsbedingungen aufzunehmen.
13
// + bzgl. der Nutzungsbedingungen aufzunehmen.
14
// + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen,
14
// + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen,
15
// + Verkauf von Luftbildaufnahmen, usw.
15
// + Verkauf von Luftbildaufnahmen, usw.
16
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
16
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
17
// + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht,
17
// + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht,
18
// + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen
18
// + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen
19
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
19
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20
// + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts
20
// + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts
21
// + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de"
21
// + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de"
22
// + eindeutig als Ursprung verlinkt werden
22
// + eindeutig als Ursprung verlinkt werden
23
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
24
// + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion
24
// + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion
25
// + Benutzung auf eigene Gefahr
25
// + Benutzung auf eigene Gefahr
26
// + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden
26
// + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden
27
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
27
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
28
// + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur
28
// + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur
29
// + mit unserer Zustimmung zulässig
29
// + mit unserer Zustimmung zulässig
30
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
30
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
31
// + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen
31
// + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen
32
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
32
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
33
// + Redistributions of source code (with or without modifications) must retain the above copyright notice,
33
// + Redistributions of source code (with or without modifications) must retain the above copyright notice,
34
// + this list of conditions and the following disclaimer.
34
// + this list of conditions and the following disclaimer.
35
// +   * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived
35
// +   * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived
36
// +     from this software without specific prior written permission.
36
// +     from this software without specific prior written permission.
37
// +   * The use of this project (hardware, software, binary files, sources and documentation) is only permitted
37
// +   * The use of this project (hardware, software, binary files, sources and documentation) is only permitted
38
// +     for non-commercial use (directly or indirectly)
38
// +     for non-commercial use (directly or indirectly)
39
// +     Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted
39
// +     Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted
40
// +     with our written permission
40
// +     with our written permission
41
// +   * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be
41
// +   * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be
42
// +     clearly linked as origin
42
// +     clearly linked as origin
43
// +   * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed
43
// +   * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed
44
//
44
//
45
// +  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
45
// +  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
46
// +  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46
// +  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47
// +  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
47
// +  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48
// +  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
48
// +  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
49
// +  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
49
// +  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
50
// +  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
50
// +  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
51
// +  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
51
// +  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
52
// +  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
52
// +  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
53
// +  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53
// +  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
54
// +  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
54
// +  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
55
// +  POSSIBILITY OF SUCH DAMAGE.
55
// +  POSSIBILITY OF SUCH DAMAGE.
56
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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57
         
58
#include <string.h>
58
#include <string.h>
59
#include "91x_lib.h"
59
#include "91x_lib.h"
60
#include "waypoints.h"
60
#include "waypoints.h"
61
#include "uart1.h"
61
#include "uart1.h"
62
 
62
 
63
// the waypoints list
63
// the waypoints list
64
#define MAX_LIST_LEN 31
64
#define MAX_LIST_LEN 31
65
 
65
 
66
Point_t PointList[MAX_LIST_LEN];
66
Point_t PointList[MAX_LIST_LEN];
67
u8 WPIndex = 0;         // list index of GPS point representig the current WP, can be maximal WPCount
67
u8 WPIndex = 0;         // list index of GPS point representig the current WP, can be maximal WPCount
68
u8 POIIndex = 0;        // list index of GPS Point representing the current POI, can be maximal WPCount
68
u8 POIIndex = 0;        // list index of GPS Point representing the current POI, can be maximal WPCount
69
u8 WPCount = 0;         // number of waypoints
69
u8 WPCount = 0;         // number of waypoints
70
u8 PointCount = 0;              // number of wp in the list can be maximal equal to MAX_LIST_LEN
70
u8 PointCount = 0;              // number of wp in the list can be maximal equal to MAX_LIST_LEN
71
u8 POICount = 0;
71
u8 POICount = 0;
72
 
72
 
73
u8 WPActive = TRUE;
73
u8 WPActive = TRUE;
74
 
74
 
75
u8 PointList_Init(void)
75
u8 PointList_Init(void)
76
{
76
{
77
        return PointList_Clear();
77
        return PointList_Clear();
78
}
78
}
79
 
79
 
80
u8 PointList_Clear(void)
80
u8 PointList_Clear(void)
81
{
81
{
82
        u8 i;
82
        u8 i;
83
        WPIndex = 0;    // real list position are 1 ,2, 3 ...
83
        WPIndex = 0;    // real list position are 1 ,2, 3 ...
84
        POIIndex = 0;   // real list position are 1 ,2, 3 ...
84
        POIIndex = 0;   // real list position are 1 ,2, 3 ...
85
        WPCount = 0;    // no waypoints
85
        WPCount = 0;    // no waypoints
86
    POICount = 0;
86
    POICount = 0;
87
        PointCount = 0; // no contents
87
        PointCount = 0; // no contents
88
        WPActive = TRUE;
88
        WPActive = TRUE;
89
        NaviData.WaypointNumber = WPCount;
89
        NaviData.WaypointNumber = WPCount;
90
        NaviData.WaypointIndex = 0;
90
        NaviData.WaypointIndex = 0;
91
 
91
 
92
        for(i = 0; i < MAX_LIST_LEN; i++)
92
        for(i = 0; i < MAX_LIST_LEN; i++)
93
        {
93
        {
94
                PointList[i].Position.Status = INVALID;
94
                PointList[i].Position.Status = INVALID;
95
                PointList[i].Position.Latitude = 0;
95
                PointList[i].Position.Latitude = 0;
96
                PointList[i].Position.Longitude = 0;
96
                PointList[i].Position.Longitude = 0;
97
                PointList[i].Position.Altitude = 0;
97
                PointList[i].Position.Altitude = 0;
98
                PointList[i].Heading = 361;             // invalid value
98
                PointList[i].Heading = 361;             // invalid value
99
                PointList[i].ToleranceRadius = 0;       // in meters, if the MK is within that range around the target, then the next target is triggered
99
                PointList[i].ToleranceRadius = 0;       // in meters, if the MK is within that range around the target, then the next target is triggered
100
                PointList[i].HoldTime = 0;                      // in seconds, if the was once in the tolerance area around a WP, this time defines the delay before the next WP is triggered
100
                PointList[i].HoldTime = 0;                      // in seconds, if the was once in the tolerance area around a WP, this time defines the delay before the next WP is triggered
101
                PointList[i].Event_Flag = 0;            // future implementation
-
 
102
                PointList[i].Type = POINT_TYPE_INVALID;
101
                PointList[i].Type = POINT_TYPE_INVALID;
-
 
102
                PointList[i].Event_Flag = 0;            // future implementation
-
 
103
                PointList[i].AltitudeRate = 0;          // no change of setpoint
103
        }
104
        }
104
        return TRUE;           
105
        return TRUE;           
105
}
106
}
106
 
107
 
107
u8 PointList_GetCount(void)
108
u8 PointList_GetCount(void)
108
{
109
{
109
        return PointCount; // number of points in the list
110
        return PointCount; // number of points in the list
110
}
111
}
111
 
112
 
112
u8 PointList_Append(Point_t* pPoint)
113
u8 PointList_Append(Point_t* pPoint)
113
{
114
{
114
        if((PointCount < MAX_LIST_LEN) && (pPoint->Index == (PointCount + 1)) ) // there is still some space in the list and index points to next
115
        if((PointCount < MAX_LIST_LEN) && (pPoint->Index == (PointCount + 1)) ) // there is still some space in the list and index points to next
115
        {
116
        {
116
                memcpy(&PointList[PointCount], pPoint, sizeof(Point_t)); // copy data to list entry                                                                             // increment list length
117
                memcpy(&PointList[PointCount], pPoint, sizeof(Point_t)); // copy data to list entry                                                                             // increment list length
117
                if(PointList[PointCount].Type == POINT_TYPE_WP) WPCount++;
118
                if(PointList[PointCount].Type == POINT_TYPE_WP) WPCount++;
118
                if(PointList[PointCount].Type == POINT_TYPE_POI) POICount++;
119
                if(PointList[PointCount].Type == POINT_TYPE_POI) POICount++;
119
                NaviData.WaypointNumber = WPCount;
120
                NaviData.WaypointNumber = WPCount;
120
                PointCount++;
121
                PointCount++;
121
                if(PointCount == 1) // only for the first entry
122
                if(PointCount == 1) // only for the first entry
122
                {
123
                {
123
                        // update POI index
124
                        // update POI index
124
                        switch(PointList[WPIndex-1].Type)
125
                        switch(PointList[WPIndex-1].Type)
125
                        {
126
                        {
126
                                case POINT_TYPE_WP:
127
                                case POINT_TYPE_WP:
127
                                        if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
128
                                        if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
128
                                        else POIIndex = 0;
129
                                        else POIIndex = 0;
129
                                        break;
130
                                        break;
130
                               
131
                               
131
                                case POINT_TYPE_POI:
132
                                case POINT_TYPE_POI:
132
                                        POIIndex = 1;
133
                                        POIIndex = 1;
133
                                        POICount = 1;
134
                                        POICount = 1;
134
                                        break;
135
                                        break;
135
 
136
 
136
                                default:
137
                                default:
137
                                        POIIndex = 0;
138
                                        POIIndex = 0;
138
                                        break;
139
                                        break;
139
                        }              
140
                        }              
140
                }
141
                }
141
                return TRUE;
142
                return TRUE;
142
        }
143
        }
143
        else return FALSE;
144
        else return FALSE;
144
}
145
}
145
 
146
 
146
// returns the pointer to the first waypoint within the list
147
// returns the pointer to the first waypoint within the list
147
Point_t* PointList_WPBegin(void)
148
Point_t* PointList_WPBegin(void)
148
{
149
{
149
        u8 i;
150
        u8 i;
150
        WPIndex = 0; // set list position invalid
151
        WPIndex = 0; // set list position invalid
151
        if(WPActive == FALSE) return(NULL);
152
        if(WPActive == FALSE) return(NULL);
152
        POIIndex = 0; // set invalid POI
153
        POIIndex = 0; // set invalid POI
153
        if(PointCount > 0)
154
        if(PointCount > 0)
154
        {
155
        {
155
                // search for first wp in list
156
                // search for first wp in list
156
                for(i = 0; i <PointCount; i++)
157
                for(i = 0; i <PointCount; i++)
157
                {
158
                {
158
                        if((PointList[i].Type == POINT_TYPE_WP) && (PointList[i].Position.Status != INVALID))
159
                        if((PointList[i].Type == POINT_TYPE_WP) && (PointList[i].Position.Status != INVALID))
159
                        {
160
                        {
160
                                WPIndex = i + 1;
161
                                WPIndex = i + 1;
161
                                break;
162
                                break;
162
                        }
163
                        }
163
                }
164
                }
164
                if(WPIndex) // found a WP in the list
165
                if(WPIndex) // found a WP in the list
165
                {
166
                {
166
                        NaviData.WaypointIndex = 1;
167
                        NaviData.WaypointIndex = 1;
167
                        // update index to POI
168
                        // update index to POI
168
                        if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
169
                        if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
169
                        else POIIndex = 0;     
170
                        else POIIndex = 0;     
170
                        return(&(PointList[WPIndex-1])); // if list is not empty return pointer to first waypoint in the list           
171
                        return(&(PointList[WPIndex-1])); // if list is not empty return pointer to first waypoint in the list           
171
                }
172
                }
172
                else // some points in the list but no WP found
173
                else // some points in the list but no WP found
173
                {
174
                {
174
                        NaviData.WaypointIndex = 0;
175
                        NaviData.WaypointIndex = 0;
175
                        //Check for an existing POI
176
                        //Check for an existing POI
176
                        for(i = 0; i < PointCount; i++)
177
                        for(i = 0; i < PointCount; i++)
177
                        {
178
                        {
178
                                if((PointList[i].Type == POINT_TYPE_POI) && (PointList[i].Position.Status != INVALID))
179
                                if((PointList[i].Type == POINT_TYPE_POI) && (PointList[i].Position.Status != INVALID))
179
                                {
180
                                {
180
                                        POIIndex = i + 1;
181
                                        POIIndex = i + 1;
181
                                        break;
182
                                        break;
182
                                }
183
                                }
183
                        }
184
                        }
184
                        return NULL;
185
                        return NULL;
185
                }
186
                }
186
        }
187
        }
187
        else // no point in the list
188
        else // no point in the list
188
        {
189
        {
189
                POIIndex = 0;
190
                POIIndex = 0;
190
                NaviData.WaypointIndex = 0;
191
                NaviData.WaypointIndex = 0;
191
                return NULL;   
192
                return NULL;   
192
        }
193
        }
193
}
194
}
194
 
195
 
195
// returns the last waypoint
196
// returns the last waypoint
196
Point_t* PointList_WPEnd(void)
197
Point_t* PointList_WPEnd(void)
197
{
198
{
198
       
199
       
199
        u8 i;
200
        u8 i;
200
        WPIndex = 0; // set list position invalid
201
        WPIndex = 0; // set list position invalid
201
        POIIndex = 0; // set invalid
202
        POIIndex = 0; // set invalid
202
 
203
 
203
        if(WPActive == FALSE) return(NULL);
204
        if(WPActive == FALSE) return(NULL);
204
 
205
 
205
        if(PointCount > 0)
206
        if(PointCount > 0)
206
        {
207
        {
207
                // search backward!
208
                // search backward!
208
                for(i = 1; i <= PointCount; i++)
209
                for(i = 1; i <= PointCount; i++)
209
                {
210
                {
210
                        if((PointList[PointCount - i].Type == POINT_TYPE_WP) && (PointList[PointCount - i].Position.Status != INVALID))
211
                        if((PointList[PointCount - i].Type == POINT_TYPE_WP) && (PointList[PointCount - i].Position.Status != INVALID))
211
                        {      
212
                        {      
212
                                WPIndex = PointCount - i + 1;
213
                                WPIndex = PointCount - i + 1;
213
                                break;
214
                                break;
214
                        }
215
                        }
215
                }
216
                }
216
                if(WPIndex) // found a WP within the list
217
                if(WPIndex) // found a WP within the list
217
                {
218
                {
218
                        NaviData.WaypointIndex = WPCount;
219
                        NaviData.WaypointIndex = WPCount;
219
                        if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
220
                        if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
220
                        else POIIndex = 0;     
221
                        else POIIndex = 0;     
221
                        return(&(PointList[WPIndex-1]));
222
                        return(&(PointList[WPIndex-1]));
222
                }
223
                }
223
                else // list contains some points but no WP in the list
224
                else // list contains some points but no WP in the list
224
                {
225
                {
225
                        // search backward for a POI!
226
                        // search backward for a POI!
226
                        for(i = 1; i <= PointCount; i++)
227
                        for(i = 1; i <= PointCount; i++)
227
                        {
228
                        {
228
                                if((PointList[PointCount - i].Type == POINT_TYPE_POI) && (PointList[PointCount - i].Position.Status != INVALID))
229
                                if((PointList[PointCount - i].Type == POINT_TYPE_POI) && (PointList[PointCount - i].Position.Status != INVALID))
229
                                {      
230
                                {      
230
                                        POIIndex = PointCount - i + 1;
231
                                        POIIndex = PointCount - i + 1;
231
                                        break;
232
                                        break;
232
                                }
233
                                }
233
                        }
234
                        }
234
                        NaviData.WaypointIndex = 0;
235
                        NaviData.WaypointIndex = 0;
235
                        return NULL;   
236
                        return NULL;   
236
                }
237
                }
237
        }
238
        }
238
        else // no point in the list
239
        else // no point in the list
239
        {
240
        {
240
                POIIndex = 0;
241
                POIIndex = 0;
241
                NaviData.WaypointIndex = 0;
242
                NaviData.WaypointIndex = 0;
242
                return NULL;
243
                return NULL;
243
        }
244
        }
244
}
245
}
245
 
246
 
246
// returns a pointer to the next waypoint or NULL if the end of the list has been reached
247
// returns a pointer to the next waypoint or NULL if the end of the list has been reached
247
Point_t* PointList_WPNext(void)
248
Point_t* PointList_WPNext(void)
248
{
249
{
249
        u8 wp_found = 0;
250
        u8 wp_found = 0;
250
        if(WPActive == FALSE) return(NULL);
251
        if(WPActive == FALSE) return(NULL);
251
               
252
               
252
        if(WPIndex < PointCount) // if there is a next entry in the list
253
        if(WPIndex < PointCount) // if there is a next entry in the list
253
        {
254
        {
254
                u8 i;
255
                u8 i;
255
                for(i = WPIndex; i < PointCount; i++)   // start search for next at next list entry
256
                for(i = WPIndex; i < PointCount; i++)   // start search for next at next list entry
256
                {
257
                {
257
                        if((PointList[i].Type == POINT_TYPE_WP) && (PointList[i].Position.Status != INVALID)) // jump over POIs
258
                        if((PointList[i].Type == POINT_TYPE_WP) && (PointList[i].Position.Status != INVALID)) // jump over POIs
258
                        {
259
                        {
259
                                wp_found = i+1;
260
                                wp_found = i+1;
260
                                break;
261
                                break;
261
                        }
262
                        }
262
                }
263
                }
263
        }
264
        }
264
        if(wp_found)
265
        if(wp_found)
265
        {
266
        {
266
                WPIndex = wp_found; // update list position
267
                WPIndex = wp_found; // update list position
267
                NaviData.WaypointIndex++;
268
                NaviData.WaypointIndex++;
268
                if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
269
                if(PointList[WPIndex-1].Heading < 0) POIIndex = (u8)(-PointList[WPIndex-1].Heading);
269
                else POIIndex = 0;
270
                else POIIndex = 0;
270
                return(&(PointList[WPIndex-1]));        // return pointer to this waypoint
271
                return(&(PointList[WPIndex-1]));        // return pointer to this waypoint
271
        }
272
        }
272
        else
273
        else
273
        {  // no next wp found
274
        {  // no next wp found
274
                NaviData.WaypointIndex = 0;    
275
                NaviData.WaypointIndex = 0;    
275
                POIIndex = 0;
276
                POIIndex = 0;
276
                return(NULL);
277
                return(NULL);
277
        }
278
        }
278
}      
279
}      
279
 
280
 
280
void PointList_WPActive(u8 set)
281
void PointList_WPActive(u8 set)
281
{
282
{
282
        if(set) WPActive = TRUE;
283
        if(set) WPActive = TRUE;
283
        else WPActive = FALSE;
284
        else WPActive = FALSE;
284
}
285
}
285
 
286
 
286
Point_t* PointList_GetAt(u8 index)
287
Point_t* PointList_GetAt(u8 index)
287
{
288
{
288
        if((index > 0) && (index <= PointCount)) return(&(PointList[index-1])); // return pointer to this waypoint
289
        if((index > 0) && (index <= PointCount)) return(&(PointList[index-1])); // return pointer to this waypoint
289
        else return(NULL);
290
        else return(NULL);
290
}
291
}
291
 
292
 
292
Point_t* PointList_GetPOI(void)
293
Point_t* PointList_GetPOI(void)
293
{
294
{
294
        return PointList_GetAt(POIIndex);      
295
        return PointList_GetAt(POIIndex);      
295
}
296
}
296
 
297
 
297
 
298